Perpetual calendar



FIG. 1 is a front elevational view of a perpetual calendar, showing mynew design, the rear elevational view being unornamented except for thegrommets; and

FIG. 2 is a left side elevational view, the right side elevational viewbeing a mirror image thereof.

The arrangement of the abbreviated week day designations shown in FIG. 1is for illustrative purposes only.

The ornamental design for a perpetual calendar, as shown.